| Piotr Zięba vs Reina | 32–58 | 35.56% |
| Piotr Zięba vs Kazuya | 26–62 | 29.55% |
| Piotr Zięba vs Hwoarang | 28–44 | 38.89% |
| Piotr Zięba vs Jin | 21–46 | 31.34% |
| Piotr Zięba vs Law | 19–47 | 28.79% |
| Piotr Zięba vs King | 17–49 | 25.76% |
| Piotr Zięba vs Eddy | 7–39 | 15.22% |
| Piotr Zięba vs Steve | 17–27 | 38.64% |
| Piotr Zięba vs Victor | 12–28 | 30.00% |
| Piotr Zięba vs Yoshimitsu | 6–33 | 15.38% |
| Piotr Zięba vs Lili | 17–20 | 45.95% |
| Piotr Zięba vs Azucena | 15–22 | 40.54% |
| Piotr Zięba vs Lidia | 10–24 | 29.41% |
| Piotr Zięba vs Heihachi | 16–17 | 48.48% |
| Piotr Zięba vs Bryan | 3–25 | 10.71% |
| Piotr Zięba vs Jun | 6–19 | 24.00% |
| Piotr Zięba vs Paul | 13–11 | 54.17% |
| Piotr Zięba vs Alisa | 8–15 | 34.78% |
| Piotr Zięba vs Lars | 8–14 | 36.36% |
| Piotr Zięba vs Asuka | 4–17 | 19.05% |
| Piotr Zięba vs Leroy | 5–14 | 26.32% |
| Piotr Zięba vs Nina | 6–10 | 37.50% |
| Piotr Zięba vs Dragunov | 4–11 | 26.67% |
| Piotr Zięba vs Claudio | 8–5 | 61.54% |
| Piotr Zięba vs Devil Jin | 2–10 | 16.67% |
| Piotr Zięba vs Feng | 2–10 | 16.67% |
| Piotr Zięba vs Lee | 5–7 | 41.67% |
| Piotr Zięba vs Panda | 3–8 | 27.27% |
| Piotr Zięba vs Xiaoyu | 4–6 | 40.00% |
| Piotr Zięba vs Jack-8 | 2–8 | 20.00% |
| Piotr Zięba vs Raven | 2–8 | 20.00% |
| Piotr Zięba vs Leo | 6–3 | 66.67% |
| Piotr Zięba vs Anna | 3–5 | 37.50% |
| Piotr Zięba vs Fahkumram | 2–5 | 28.57% |
| Piotr Zięba vs Clive | 1–4 | 20.00% |
| Piotr Zięba vs Shaheen | 1–3 | 25.00% |
| Piotr Zięba vs Kuma | 0–4 | 0.00% |
| Piotr Zięba vs Zafina | 0–3 | 0.00% |
Limitations
This data is often requested to give insight into which characters you have more trouble with than others, but it is not particularly helpful for that. The main issue is that it is heavily skewed by how strong the opponents you play are.
For example, this data suggests my worst matchup is clearly vs Reina, but that's just because most of those games are vs Yagami.
There is a way to account for this being worked on. The central idea is to assign each matchup a rating vs you which adjusts based on the result, much like the regular rating but also based on the rating of each player. With this, it would give a better summary of how well you perform vs each character.
In the meantime, this page is here to present the data as requested.